Region, Province, City Dropdown

<div id="col_region" class="col_loc_selected form-group" data-location="region" >
    <label class="col-sm-2 control-label">Region</label>
    <div class="col-sm-10 input-group" style="padding-left: 15px;">
        <select name="region" class="form-control chosen-select" id="region" onchange="" multiple style="width:850px;" tabindex="4" data-placeholder="Select Regions">
                <?php
                $sql_region=query("SELECT * FROM tbl_region ORDER BY name ASC");
                $num=NumRows($sql_region);
                while($row=fetchAssoc($sql_region)){
                ?>
                    <option value="<?php echo $row['r_id'];?>">
                    <?php echo utf8_encode($row['name']); ?></option>
                <?php
                 }
                ?>
        </select>
    </div>
</div>
<div id="col_province" class="col_loc_selected form-group" data-location="province" >
    <label class="col-sm-2 control-label">Province</label>
    <div class="col-sm-10 input-group" style="padding-left: 15px;">
        <select name="province" class="form-control chosen-select" id="province" onchange="" multiple style="width:850px;" tabindex="4" data-placeholder="Select Provinces">
                <?php
                $sql_province=query("SELECT * FROM tbl_province ORDER BY name ASC");
                $num=NumRows($sql_province);
                while($row=fetchAssoc($sql_province)){
                ?>
                    <option value="<?php echo $row['pt_id'];?>">
                    <?php echo utf8_encode($row['name']); ?></option>
                <?php
                 }
                ?>
        </select>
    </div>
</div>
<div id="col_city" class="col_loc_selected form-group" data-location="city" >
    <label class="col-sm-2 control-label">City/Town</label>
    <div class="col-sm-10 input-group" style="padding-left: 15px;">
        <select name="city" class="form-control chosen-select" id="city" onchange="" multiple style="width:850px;" tabindex="4" data-placeholder="Select Cities / Towns">
                <?php
                $sql_city=query("SELECT * FROM tbl_city ORDER BY name ASC");
                $num=NumRows($sql_city);
                while($row=fetchAssoc($sql_city)){
                ?>
                    <option value="<?php echo $row['ct_id'];?>">
                    <?php echo utf8_encode($row['name']); ?></option>
                <?php
                 }
                ?>
        </select>
    </div>
</div>